It’s not easy being on the bubble. Just ask fans of NBC’s Chuck and Fox’s Lie to Me, which are still awaiting word on whether or not they’ll be part of their respective networks’ 2011-2012 lineups. One thing that’s not in doubt, though, is that one of these at-risk gladiators is going to advance to the semifinals of TVLine.com’s first annual “Renew Our Show!” Bracket Tournament. But it’s up to you to decide who’ll survive this ferocious quarterfinal matchup.

For those of you who didn’t jump in during Round One, “Renew Our Show!” brought together 16 existing on-the-bubble series in a single-elimination tournament. Chuck decimated Human Target in the first round, while Lie to Me scored a comfy win over No Ordinary Family to advance to the final eight.

Every weekday at 1 p.m. ET for the next week, you’ll be able to vote in polls to help narrow down the “Renew Our Show!” field — until there’s only one champ standing. Click here to see the entire bracket (then click again on the image for a zoomed-in view). And if you’re losing sleep about the status of anything currently on your DVR “series-recording” lineup, don’t miss our regularly updated Renewal Scorecard feature.

But before that happens, you’ve got to decide between NBC’s zippy spy thriller and Fox’s complex crime procedural. Polls will be open for 48 hours, so do your civic duty, then hit the comments to justify your vote, and head to Facebook and Twitter to whip your fellow fanboys and fangirls into a frenzy.

I like Lie To Me and I would really miss it but Chuck is a rare gem in the world of TV series. In its action-comedy exterior so extraordinary drama and character development have been done and are still going on, it would be a shame if Chuck disappears before we get the proper ending it deserves with a 13 episodes season 5.

If Lie To Me is gone I will mourn for a few moments and that’s it. If Chuck is gone my life will be changed for a serious period of time – and not for the better.

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Really rough choice. Chuck is my #2 fave show, Lie To Me is #3. I really like Chuck, but its been a weird season. There seems to be a whole lot of campy-ness to it and there really is no progression toward anything other the wedding which would be a good ender. Lie To Me is great. The will they/wont they between Cal & Foster, keeps things interesting. Adding Michael B. Jordan to the cast full time for s4 would be a great addition. As long as they keep getting great guests (such as Jason Dohring, Ashton Holmes & Annette O’Toole) as suspects it should continue to be great.

This is tough. Chuck is one of my favorite shows, and I don’t even like Lie to Me, but I have seen one episode, and I think it has a lot of potential. Chuck, on the other hand, seems to be wrapping up. I voted Chuck, since I can always count on it making me laugh and I LOVE everything that’s been going on. However, I really pick both. Chuck needs a season (or even a 13-episode pick-up) to finish the story. And Lie to Me seems promising, so I would hope it gets picked up as well. If it gets picked up, I’m probably going to catch up on the episodes and start watching it. Still… if Chuck doesn’t get renewed, my heart may be broken.

I’ve never even heard of Chuck… Lie to Me is a great show–intelligent, funny, based on science–with a great cast. Fox has a history of canceling good shows before there time. With the new age of watching videos via Hulu and other online streaming media, I think that all shows take a hit in ratings. Fox needs to take this in consideration because there is a huge global Lie To Me following out there . Tim Roth and Kelli Williams are dynamic together. If this show goes, I’ll probably abandon watching Fox shows again.

I stopped watching Lie To Me this season because it was getting so tedious. Chuck, on the other hand, while not as good as seasons past, is still entertaining me. Bring it on for a fifth and final season to wrap things up and stop at a 100th episode for the little show that could!

You know what, NBC has already announced that Chuck has been renewed, so that makes all this voting USELESS! How about just disqualifying Chuck then and letting Lie to Me advance to the next round!! It’s only fair!